Swing arm spring housing



FIG. 1 is a top, front, left side perspective view of a swing arm spring housing showing my new design;

FIG. 2 is a bottom, front, right side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof, the right side being a mirror image thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a back elevational view thereof.

The broken lines are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a swing arm spring housing, as shown and described. 